压气式断路器开断过程中灭弧室内气动特性及分闸速度特性的研究  

The Analysis of Pneumatic Characteristics and Open Speed of Puffer Type Circuit Breaker in Short Circuit Current Interrupting

作　　者：王尔智 林莘 徐建源 

出　　处：《沈阳工业大学学报》1994年第3期1-7,共7页Journal of Shenyang University of Technology

基　　金：国家"八五"重大技术装备攻关项目

摘　　要：计算了气吹断路器中喷口内非定常气流流动参数分布，根据上游压气室气压变化，改变喷口尺寸，计算了喷口内气流流动速度和压力分布特性，得到了在喷口内避免激波产生的条件．从理论上分析了电弧的热效应对分闸速度以及对喷口内焓流的影响．In this paper,the parameters distribution of instantaneous gas flow along nozzle in puffertype circuit breaker were calculated.According to the varying pressture in upstream pufferchamber,the characteristics of gas flow and pressure along nozzle were calculated for differentnozzle size.The conditions without shock wave in nozzle were derived.The effects of arc onthe opening speed and the enthalpy flow in nozzle were analyzed theoretically.

关 键 词：断路器 灭弧室 气动特性 分闸速度 

分 类 号：TM561[电气工程—电器]